How many percent is the change in the price, if: a The price was $75 and now it is $300?

300% increase

Step-by-step explanation:

We know this is an increase since the price goes up

Take the new price and subtract the original price

300-75 = 225

Divide this by the original price

225/75 = 3

Multiply this by 100% to get percent form

3*100%=300%

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)