You need 30 yards of yarn to crotchet a small scarf. Cheryl bought a 100 yard ball of yarn and has already used 10 yards. Write and solve an equation to find how many scarves she can crotchet if she plans on using up the entire ball.

If you could answer these your a life saver

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

Sara has 2 2/3 cup taco meat. she needs 1/6 cup to make one taco. how many tacos can sara make with the taco meat she has?