MATHEMATICS TEST GRADE : $8$ DATE : $24$ MAY $2024$ MARKS : $30$ TIME : $30$ minutes OUFSTION $11\mathrm{.}1$ Write algebraic expressions for each of the following statements. $1\mathrm{.}1\mathrm{.}1$ A product of a number and itself is added to sixty. $1\mathrm{.}1\mathrm{.}2$ Themba is fifteen years younger than his sister. What is Themba's age if his sister's age is $x?1\mathrm{.}2$ Consider the following expression: $5x^3+2x^2-x+41\mathrm{.}2\mathrm{.}1$ How many terms does the expression have? $1\mathrm{.}2\mathrm{.}2$ What is the degree of the expression? $1\mathrm{.}2\mathrm{.}3$ What is the coefficient of $x1\mathrm{.}2\mathrm{.}4$ What is the constant term $1\mathrm{.}2\mathrm{.}5$ Find the value of the expression if $x=-5(2)(3)1\mathrm{.}3$ Simplify the following: $1\mathrm{.}3\mathrm{.}12x+6x1\mathrm{.}3\mathrm{.}23x(5-2y)+2x(4+y)1\mathrm{.}3\mathrm{.}3\sqrt[\phantom{2}]{4x^2}+\sqrt[\phantom{2}]{25x^2}1\mathrm{.}4$ Simplify the follow