Question

HHHEEELLPPP PPPLLLEEASEEE!!!!!! PLZZ HELP ME I GIVE BRAINLIEST!!!!!!!PZL HELP ME

Answer 1

Okay, we can use the functions in parts 3 and 4 since we want to calculate how many points will be deducted for 3 falls and how many points are earned for 4 seconds on the rail trick.

Part 3 function:
$\sf y=1.6x$

He fell 3 times, so plug this in for 'x':

$\sf y=1.6(3)$

Multiply:

$\sf y=4.8$

So he will receive a 4.8 point deduction for falling 3 times.

Part 4 function:
$\sf y=7x+10$

Where 'x' is the seconds he does the trick. He did it for 4 seconds, so let's plug that in for 'x':

$\sf y=7(4)+10$

Multiply:

$\sf y=28+10$

Add:

$\sf y=38$

So he will receive 38 points for the 4-second rail trick.