Question 15 [1 point) E '0 Listen b You make a purchase at a local furniture store that is too large to take home yourself. For a small fee, the store will deliver your purchase. For your purchase, you pay for the item, the tax and the delivery fee. Taxes are at 14% and the delivery fee is $20. If x represents the price of the item, write a function that represents the amount to be paid before taxes, including delivery fee: 0a) f(a=) = m+20 O b} f(m) = 1.1401; + 20) O c) ax) = 202: O a) x) = a: + 1.14 Question 16 [1 point) E '0 Listen b The cost of fuel in C dollars is a function of the number of litres (L) of fuel consumed. The cost of fuel is $1.01 per litre. The amount of fuel consumed (L) is a function of the number of hundreds of km (K) travelled. A car consumes 12.4 L per 100 km. Determine the cost for a trip of 200 km. O 3) $2504.80 0 hi $15.97 0 C) $25.05 0 dl $202 Question 17 (1 point) Listen The cost of fuel in C dollars is a function of the number of litres (L) of fuel consumed. The cost of fuel is $1.01 per litre. The amount of fuel consumed (L) is a function of the number of hundreds of km (K) travelled. A car consumes 12.4 L per 100 km. Write the function L in terms of K. O a) L(K) = 124 Ob) L(K) = 12.4 O c L(K) = 12.4K O d) L(K) = 1.01K Question 18 (1 point) Listen Hawks do not like the noise that humans make, so they tend to move out of an area as more and more people move into the area. If p represents the number of thousands of people in an area, and / represents the number of hawks in the same area, the relationship between the hawk population and the human population can be modelled with the equation h(p) = 1000 - Since hawks eat mice, as the hawk population decreases, the mice population in the area will increase. If m represents the number of mice in the area, this relationship can be modelled with the equation m(h) = 800 + A function that represents the population of mice in an area as it relates to the number of thousands of people in an area would be: O a) m(p) = 800 + 10p Ob) m(p) = 1000 + 10 O c) m(p) = 1000 + p Od) m(p) = 1000 - 10 Question 19 (1 point) Listen The cost of fuel in C dollars is a function of the number of litres (L) of fuel consumed. The cost of fuel is $1.01 per litre. The amount of fuel consumed (L) is a function of the number of hundreds of km (K) travelled. A car consumes 12.4 L per 100 km. Determine the cost for a trip of 1550 km. O a) $19 412.20 b) $194.12 O c) $123.77 O d) $1565.50