Answer:
Heidi'd mom made 32 rose arrangements and 8 tulip arrangements.
Explanation:
Let the number of rose arrangements be = x
Let the number of tulip arrangements be = y
Heidi's mom made 4 times as many rose arrangements as tulip arrangements.
We get the equation;
Heidi's mom made 40 arrangements. We get the second equation:
Substituting the value of x from first equation to second equation, we get

=>

Dividing both sides by 5;
y = 8
And x = 4y
So,

x = 32
Hence, Heidi'd mom made 32 rose arrangements and 8 tulip arrangements.