Question

7 without calculating the exact value, is $(-\frac{5}{8})^{2}+1$ positive or negative? explain how you know.
8 sarah has a savings account. this month she deposits four paychecks. each paycheck is for $125.25. she makes four withdrawals to buy groceries. each withdrawal is for $45. she also makes another withdrawal of $400. what is the total change in sarahs account?
a -$1,279
b -$79
c $281
d $321
9 math journal write a sum, difference, product, and quotient each with an approximate value of 6. the sum can only use decimals. the difference can only use mixed numbers. the product can only use negative numbers and at least one must be a fraction or decimal. the quotient should use only positive numbers and at least one should be a fraction or decimal.
end of lesson checklist
interactive glossary write a new entry for approximate. write at least one synonym for approximate.
self check go back to the unit 3 opener and see what you can check off.

Explanation:

Step1: Calculate total deposits

Sarah deposits 4 paychecks of $125.25 each. So total deposits = \(4\times125.25 = 501\)

Step2: Calculate total withdrawals

She makes 4 withdrawals of $45 each and 1 withdrawal of $400. Total withdrawals=\(4\times45+400=180 + 400=580\)

Step3: Calculate total change

Total change = Total deposits - Total withdrawals. So \(501-580=- 79\)

Answer:

B. \(-$79\)