Solve the problem.One Internet service provider has the following rate schedule for high-speed Internet service:Monthly service charge$18.001st 50 hours of usefreeNext 50 hours of use$0.25/hourOver 100 hours of use$1.00/hourWhat is the charge for 50 hours of high-speed Internet use in one month?What is the charge for 75 hours of high-speed Internet use in one month?What is the charge for 135 hours of high-speed Internet use in one month?
Fill in the blank(s) with the appropriate word(s).
$18.00
$24.25
$65.50
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State how many peaks you would expect for the distribution described.Sales of birthday cards over a one-year period
A. One B. None C. Three D. Two
Estimate the product by rounding to a single nonzero digit, then find the actual product.77 × 15
A. Estimate: 100; Actual: 1165 B. Estimate: 1155; Actual: 5929 C. Estimate: 1600; Actual: 1155 D. Estimate: 1160; Actual: 1155
Write a system of equations associated with the augmented matrix. Do not try to solve.
= 
A. 2x + y = -3 x + 2y = 2 -5x - 5y = 2 B. 2x + y + z = -3 x - 5y = 2 C. 2x = -3 x + y = 2 -5x - 5y = 2
Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = sin ?Find f(?).
A. 
B. 
C. 
D. 