Catron evaluates the expression (negative 9) (2 and two-fifths) using the steps below.

step 1: (negative 9) (2 + two-fifths)
step 2: (negative 9) (negative 2) + (negative 9) (two-fifths)
step 3: negative 18 + (negative 9) (two-fifths)
step 4: (negative 27) (two-fifths)
solution: negative startfraction 54 over 5 endfraction = negative 10 and four-fifths

which describes catron’s error?
she incorrectly broke up 2 and two-fifths.
she incorrectly distributed the –9; she should have distributed 2.
she did not follow order of operations.
she incorrectly converted from an improper fraction to a mixed number.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie