What is answer to -7b=-4

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5