Heidi has x donations for the bake sale. grandpa case has 2 fewer donations than heidi. if there are 7 donations in all, which equation represents the equation to determine the value of x?

2x = 7
7 – x = 2
x + (x − 2) = 7
7 = x + 2

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

With both problems. a.s.a.p directions on photo ^