Mariah earns $32.75 per week working as a pet sitter. She worked as a pet sitter for 2 weeks. She previously saved $70.99 in allowance money. She spent $12.25 of her total earning to buy video games. Mariah put of the remaining money in her savings account. Mariah used the following steps to find the total money she put in her savings account: Step 1: [ ($32.75 ⋅ 2) + $70.99 - $12.25] ⋅ Step 2: [$65.5 + $70.99 - $12.25] ⋅ Step 3: $136.49 - $3.0625 = $133.4275 In which step did Mariah first make an error? Explain, using words, how Mariah can correct her error.

Question

Rich

Mathematics

18 December, 23:35

Mariah earns $32.75 per week working as a pet sitter. She worked as a pet sitter for 2 weeks. She previously saved $70.99 in allowance money. She spent $12.25 of her total earning to buy video games. Mariah put of the remaining money in her savings account. Mariah used the following steps to find the total money she put in her savings account: Step 1: [ ($32.75 ⋅ 2) + $70.99 - $12.25] ⋅ Step 2: [$65.5 + $70.99 - $12.25] ⋅ Step 3: $136.49 - $3.0625 = $133.4275 In which step did Mariah first make an error? Explain, using words, how Mariah can correct her error.

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Answers (1)

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Jamar Woodard · Answer 1

The actual answer us 124. 24

she needs to use step 1 only. dont put brackets around the equation. and only put parenthesis around the multiplication. Do multiplication first and then do the problem in order from left to right.