Q(x)= 2x+2 R(x)=x^2-1 find (r•q)(5) and (q•r)(5)

Q(x) = 4

R(x) = 0

Step-by-step explanation:

Q(x) = 2x + 2 (1)

R(x) = x² - 1 (2)

i) For (R * Q)(5)  and [(Q * R)], we have as follow:

[(x² - 1)(2x + 2)] (5)

= (2x³ + 2x² - 2x - 2)(5)

= x³ + x² - x - 1

When x = -1

x³ + x² - x - 1 = 0

∴ (x³ + x² - x - 1) ÷ (x + 1) = x² - 1

If x + 1 = 0

x = -1

and x² - 1 = 0

x = 1

From (1), when x= 1: Q(x) = 4

From (2), when x= 1 or -1: R(x) = 0

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

homozygous. one is homozygous, while two is heterozygous.