Kaylee is ordering accessories for her piano. A piano key costs $32, and a pack of strings costs $12. The shipping cost is $7 per order. The expression 32b + 12b + 7 can be used to find the cost in dollars of buying b piano keys and b packs of
strings plus the cost of shipping.
c) For A-C, choose Yes or No to indicate whether the statements are correct.
A. The simplified expression is 44b + 7.
B. The terms are 32b, 12b, and 7b.
OYes No
Yes No
O No
C. The like terms are 12b, 7b.
Yes

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?