If m = 3, p = -3, q = 7 and r = \(\frac{5}{2}\), evaluate m(p+q+r)
A
19.50
B
19.15
C
18.95
D
18.05
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
m = 3, p = -3, q = 7 and r = \(\frac{5}{2}\)
m(p+q+r) = 3(-3 + 7 + \(\frac{5}{2}\))
= 3(4 + \(\frac{5}{2}\))
= 3(4 + 2\(\frac{1}{2}\))
= 3 * 6\(\frac{1}{2}\)
= 3 * \(\frac{13}{2}\)
= \(\frac{39}{2}\)
= 19.50
Source: Myschool Past Questions Archive (Record #8225)