On his first three tests, Alan scored 76, 89, and 92. What score must he get on his fourth test to have an average of 80 for all four tests?

Convert to a logarithmic equation. e^6=0.0025

A bank account pays 4.2% interest. write an equation with an intial value 2000. how much will the account have in it after 5 years

Give examples of 100% increase 100% decrease and 100% error. explain each

If a dog can eat 1/3 of a bag of food in 1/2 week, how many bags of food can the dog eat in 1 week?

What is the formula for figuring out the area of a circle?

Jane is 3 years older than mary, and mary is twice as old as kay. if kay is x years old, how old is jane?

Which expression is equivalent to 1.7 - 0.5 (0.2x - 1.6) ? A) 2.5 - 0.1x B) 0.9 - 0.1x C) 0.1x - 0.9 D) 0.1x - 2.5

A ray of light strikes a flat block of glass (n = 1.52) of thickness 1.50 cm at an angle of 36.0° with the normal. Trace the light beam through the glass, and find the angles of incidence and refraction at each surface.

A tree 7 ft. tall grows an average of 6in. each year. Which equation models the tree's height h after x years?

Korey is planning to open a comic book store. He has developed the following expense breakdown for set-up and operation for the first year. Korey has $8,500 in savings and $25,000 in inheritance money to use to open his store.