Solve the problem.Paul has grades of 74 and 80 on his first two tests. What must he score on his third test in order to have an average of at least 80?
A. at most 78
B. at most 80
C. at least 86
D. at least 77
Answer: C
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Solve the problem.A projectile is fired from a height of 7.2 feet with an initial velocity of 181 ft/sec at an angle of 30° with the horizontal. The parametric equations for the path of the projectile are x = (181 cos 30°)t, and y = 7.2 + (181 sin 30°)t - 16t2,where x and y are in feet and t is in seconds. Find the total horizontal distance traveled by the projectile. Round your answer to the nearest tenth of a foot.
A. 664.3 feet B. 898.8 feet C. 1328.6 feet D. 886.6 feet
Eva invested a certain amount of money at 15% interest and $2,000 more than that amount at 16%. Her total yearly interest was $1,715. How much did she invest at each rate?
A. $2,000 at 15%, $4,500 at 16% B. $4,500 at 15%, $6,500 at 16% C. $4,700 at 15%, $6,300 at 16% D. $4,700 at 15%, $6,700 at 16% E. $6,500 at 15%, $4,500 at 16%
Determine how many of the first 5 statements in the sequence obtainable from the given statement are true.The measure of each interior angle of a regular polygon with n sides is 180 - 
. (n ? 3)
A. 5 B. 3 C. 2 D. 4
Find the domain of the composite function f ? g.f(x) = 
; g(x) = 2x + 10
A. {x 
B. {x 
C. {x 
D. {x 