A ball thrown vertically upward from the ground. Its distance in feet from the ground in t seconds is s=-16t^2+128t.[..]

a rectangular piece of metal is 30 in longer than it is wide. Squares with sides 6 in long are cut from the four[..]

Two ships leave port at the same time, one heading due south and the other heading due east. Several hours after[..]

an investor invested a total of $2,400 in two mutual funds. one fund earned 6% profit while the other earned a 3%[..]

find the area of the rectangle, length is 4x^s an with is 7x^2

Annual profit in thousands of dollars is given by the function, P(x) = 12x - 100, where x is the number of items[..]

The number of long distance phone calls between two cities in a certain time period varies jointly as the[..]

Sally can paint a room in 5 hours while it takes Steve 3 hours to paint the same room. How long would it take them[..]

T varies jointly as j and m^2. When j=7 and m=2, T=84. Find T when j is 8 and m is 1.

If z varies inversely as w,and z=30 when w=0.7,find z when w=10