Solve the problem.Jane has invited 50 people to a party and expects 
to attend. Of those invited who attend, 
will bring a date. Express the expected number of guests n as an inequality and graph the values of n.
n = number of guests
A. 24 ? n ? 40
n = number of guests
B. 42 ? n ? 60
n = number of guests
C. 20 ? n ? 25
n = number of guests
D. 30 ? n ? 40
n = number of guests
Answer: B
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Find the linear approximating polynomial for the function centered at a.f(x) = 
, a = 27
A. p1(x) = 
x + 1
B. p1(x) = 
x + 6
C. p1(x) = 
x + 2
D. p1(x) = 
x + 1
Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s), y = h(t), z = k(r, s, t)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Solve.A football team lost 7 yards on each of two consecutive plays. Represent the total loss as product of signed numbers and find the total loss.
A. 2 ? (-7) = -16 yds; 16 yard loss B. 7 - 2 = 5 yds; 5 yard loss C. 2 + (-7) = -5 yds; 5 yard loss D. 2 ? (-7) = -14 yds; 14 yard loss
Perform the indicated computation. Write the answer in scientific notation.(4 × 103)(4.8 × 104)
A. 1.92 × 108 B. 192 × 107 C. 19.2 × 108 D. 1.92 × 1012