Simplify 3m + 7 – 4m + 6

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !