###Human: To upgrade her kitchen, Amanda is changing out the doorknobs/pulls.  She’s replacing 18 cabinet knobs, which cost $2.50 each and 8 drawer pulls which cost $4.00.  How much will the kitchen upgrade cost her?, ### Assistant: She’s replacing 18 cabinet knobs for $2.50 each for a total of 18*2.50 = $45.00
She’s replacing 8 drawer pulls for $4.00 each for a total of 8*4 = $32.00
The cabinet knobs will cost $45.00 and the pulls will cost $32.00 for a total of 45+32 = $77.00 in upgrades 
 So the answer is :  77