The product of a number and 9, increased by 4, is 58. Find the number.

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Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50