Solve the problem.An object is propelled vertically upward from the top of a 128-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 3.5 seconds
B. 8.0 seconds
C. 1.0 seconds
D. 2 seconds
Answer: B
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Solve the problem. Round to the nearest tenth if necessary.All 30 of the students in a mathematics class attended class on Monday. On Tuesday only 18 students attended. What was the percent of decrease?
A. 60% B. 33.3% C. 66.7% D. 40%
Solve the equation for ? if 
. Give your answer in degrees.
?
What will be an ideal response?
Write a formula for src="https://sciemce.com/media/3/ppg__cognero__Section_5.2_Sum_and_Difference_Formulas__media__7dcfbdfe-0b1a-49cf-8a8c-9acba85daf1c.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_4b1506d72a2c44dd802fa3aa8" /> and using the formula for the sine of a sum.
What will be an ideal response?
by writing 
as
List all the elements of B that belong to the given set.B = {12, 
, -22, 0, 
, , 0.09, -8?, 0.252525...}Irrational numbers
A. {
, -8?}
B. {
}
C. {
, -8?, 0.252525...}
D. 