Solve the problem.As Sunee improves her algebra skills, she takes 0.9 times as long to complete each homework assignment as she took to complete the preceeding assignment. If it took her 75 minutes to complete her first assignment, find how long it took her to complete the fifth assignment. Find the total time she took to complete her first five homework assignments. Round to the nearest minute.

A. 49 min;  307 min
B. 44 min;  258 min
C. 49 min;  258 min
D. 44 min;  307 min


Answer: A

Mathematics

You might also like to view...

If f satisfies the equation of change ,  and the initial value of f is 7.76, find a formula for the function . ?

A.
B.
C.
D.

Mathematics

Solve the problem.When an object falling from rest encounters air resistance proportional to the square of its velocity, the distance it falls (in meters) after t seconds is given by where m is the mass of the object in kilograms, g = 9.8 m/s2 is the acceleration due to gravity, and k is a physical constant. A BASE jumper  leaps from a tall cliff and performs a ten-second delay (she free falls for 10 s and then opens her chute). How far does she fall in 10 s? Assume 

style="vertical-align: -4.0px;" /> Round the answer to one decimal place if necessary. A. 72.4 m B. 14.5 m C. 331.2 m D. 361.9 m

Mathematics

Write the Indo-Arabic equivalent for the following.MMMCCX

A. 321 B. 321,000 C. 32,100 D. 3210

Mathematics

Multiply the expressions.(9x + 7)(9x - 7)

A. 81x2 + 126x - 49 B. 81x2 - 49 C. x2 - 49 D. 81x2 - 126x - 49

Mathematics