Without graphing the function, determine its amplitude or period as requested.y = 2 cos 
xFind the period.
A. 6?
B. 
C. 
D. 2
Answer: A
Mathematics
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Use the distributive property to rewrite the expression.-7(-7x) - 7(-3y)
A. -7(-7x - 3y) B. -14(-7x - 3y) C. 49x + 21y D. -7x(-7 - 3) = 70x
Mathematics
Use the LCD to clear fractions and solve the given equation.- 
= y - 
A. 
B. 
C. - 
D. - 
Mathematics
Solve with calculator.The formula 
models the duration of a storm, D, in hours, in terms of the diameter of the storm, x, in miles. Use a calculator to determine the duration of a storm with a diameter of 7 miles. Round to the nearest hundredth.
A. 0.19 hours B. 1.3 hours C. 0.34 hours D. 18.52 hours
Mathematics
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
.
A. (7, 0), (0, 0) B. (- 56, 0) C. (8, 0), (-7, 0) D. (7, 0), (-8, 0)
Mathematics