one < savvasrealize.com Due 02/09/21 11:59 pm Eit 126 - Lesson 4-6: MathXL for School: Practice & Problem Solving Question Help 0 4.6.PS-18 Estimation Gabe goes to the mall. If k is the number of items he bought, the expression 12.97k + 23 gives the amount he spent in dollars at one store. Then he spent 21 dollars at another store. Find the expression which represents the amount Gabe spent at the mall. Then estimate how much Gabe spent if he bought 7 items. What expression represents the amount in dollars that Gabe spent at the mall? (Simplify your answer. Use whole numbers or decimals for any numbers in the expression.) Enter your answer in the answer box and then click Check Answer. Clear All Check Answer 1 part remaining Question Review progress Back Next → of 12 11



Answer :

To find the amount of dollars Gabe spent at the mall you should add the amount he spent on each of the stores.

store 1

[tex]12.97k+23[/tex]

store 2

[tex]21[/tex]

add both expressions together

[tex]\begin{gathered} 12.97k+23+21 \\ 12.97k+44 \end{gathered}[/tex]

To estimate how much it would be if he bought 7 items we must replace k for 7 in the equation

[tex]\begin{gathered} 12.97\cdot(7)+44 \\ 90.79+44 \\ 134.79 \end{gathered}[/tex]

he spent $134.79