A milkshake vendor sold 16 mango shakes, 13 strawberry shakes, and 29 chocolate shakes during the first shift of the day. In the second shift, she sold 26 mango shakes, 19 strawberry, and 45 chocolate. In the last shift, she sold 6 mango shakes, 11 strawberry, and no chocolate. Total sales were $419 in the first shift, $649 in the second shift, and $96 in the third shift. If you form a linear system representing this data and create a matrix from it, the determinant is 578. What is the price of one chocolate shake?

$9

$7

$4

$2

Question

A milkshake vendor sold 16 mango shakes, 13 strawberry shakes, and 29 chocolate shakes during the first shift of the day. In the second shift, she sold 26 mango shakes, 19 strawberry, and 45 chocolate. In the last shift, she sold 6 mango shakes, 11 strawberry, and no chocolate. Total sales were $419 in the first shift, $649 in the second shift, and $96 in the third shift. If you form a linear system representing this data and create a matrix from it, the determinant is 578. What is the price of one chocolate shake?

    $9

    $7

    $4

    $2

anonymous · Answer

I think its 4