Question

11. Find the value of the following expressions. a. 7a + 1; when a = -2 c. 7-7x; when x = 2 e. 2a + b; when a = 1 and b= -3 b. 3x + 1; d. 11x - 100; f. 3a + 4b + 50; when x= -4 when x = 9 when a = 1, b = 0 and c=-1 the pattern of numbers ​

Answer 1

Answer:

$a) \\ 7a + 1 \\ 7( - 2) + 1 \\ - 14 + 1 = - 1$

$c) \\ 7 - 7x \\ 7 - 7(2) \\ 7 - 14 = - 7$

$e) \\ 2a + b \\ 2(1) + ( - 3) \\ 2 - 3 = - 1$

$b) \\ 3x + 1 \\ 3( - 4) + 1 \\ - 12 + 1 = - 11$

$d)11x - 100 \\ 11(9) - 100 \\ 99 - 100 = - 1$

$f)3a + 4b + 50 \\ 3(1) + 4(0) + 50 \\ 3 + 0 + 50 \\ 50 + 3 = 53$

Answer 2

Refer the above attachment ✍