Please help me on number 4

143degrees

Step-by-step explanation:

sum of angles of a triangle =180degrees

let the third unknown angle be x

99+37+x=180

136+x=180

x=180-136

x=44

the sum of two opposite interior angles is equal to the exterior angle

44+99=<PQR

<PQR=143 degrees.

OR

the sum of angles on a straight line is 180 degrees

<PQR+37=180

<PQR=180-37

<PQR=143

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300