Find the value of x in each of the following
a)2x-7 = 13
b)3x+4 = 25

Sorry, I'm bad at maths.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )