Plzz answer the question

What is the solution set for z+10=z-2

An architect builds a model of a park in the shape of a rectangle. the model is 40.64 centimeters long and 66.04 centimeters wide. one inch equals 2.54 centimeters. use the ratio table to find the ratio of the length to the sum of the length and width in inches and in simplest form. length 40.64 width 66.04 a. 8: 21 b. 13: 21 c. 21: 13 d. 21: 8

Bob paid $3 less than tim at a local pizza parlor. together they spent $7.80. how much did bob pay for pizza?