Here are the prices 4 cheese pizza at a certain pizzeria: pizza size price in dollars

small. 11.60

medium

large. 16.25

a)You had a coupon that made the price of a large pizza $13.00. For what percent off was the coupon?

b) Your friend purchased medium pizza for $10.31 with a 30% off coupon. what is the price of a medium pizza without a coupon?

c) Your friend has a 15% off coupon and $10. what is the largest pizza that your friend can afford?

PLEASE help i do not understand thank you!​

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered