Question

If p=2q2−5 and q=10−3r, find

What is the value of p when r equals 2?

A) 39
B) 49
C) 59
D) 69

Answer 1

To find the value of p when r equals 2, substitute the given value of r into the equation p = 2q^2 - 5. The value of p is 27.

Step-by-step explanation:

To find the value of p when r equals 2, we can substitute the given value of r into the equation.

We are given that p = 2q^2 - 5 and q = 10 - 3r.

1. Substitute r = 2 into q: q = 10 - 3(2) = 10 - 6 = 4.
2. Substitute q = 4 into p: p = 2(4)^2 - 5 = 2(16) - 5 = 32 - 5 = 27.

Therefore, when r equals 2, the value of p is 27.