Answer:
A and C
Step-by-step explanation:
Numerical expressions use numbers and algebraic expressions use variables.
Answer:
6.28
Step-by-step explanation:
2 x 3.14
Answer:
43
Step-by-step explanation:
Given
2(p - q) + 5(p + q) ← substitute p = 7 and q = - 2 into the expression
= 2(7 - (- 2)) + 5(7 + (- 2))
= 2(7 + 2) + 5(7 - 2)
= 2(9) + 5(5)
= 18 + 25
= 43