Which of the following is a like term of -5.92? 1.45x 2[1/4 -7.78x2 3/5

I'm terrible at math any here is appreciated.

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.