Apples with mass 90 grams or less cost 32p each. Apples with mass more than 90 grams cost 39p each. Estimate the total cost of the 200 apples.
(3 marks)

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

When solving a logarithm equation, how do you find the missing variable ?