30/8=3.75
So, you need 4 trays, since you can't have 75% of a tray.
Hope this helps
Answer:
11x(7 - 3x)
Step-by-step explanation:
77x - 33x² ← factor out 11x from each term
= 11x(7 - 3x)
It would be zero because x can’t be less or more in this particular situation.
1. when you see 4(x² - 1), then you have to multiply 4 with everything in the bracket. keep in mind that you always have to be cautious of the sign whether it is a positive or a negative.
positive ×/÷ positive = positive
negative ×/÷ negative = positive
positive ×/÷ negative = negative
negative ×/÷ positive = negative
^ you have to remember this.
2. only like terms (same alphabet) can plus or minus each other.
3. simplify by taking out the common factor and placing it outside the bracket.
Greta starts with $100 in her savings account
She adds $50 each week
Balance after week 1 = 100 + 50 = 150
Part A
Unit rate of change here is = 
⇒ Unit rate of change here is = 
⇒ Unit rate of change here is = 50%
Part B
Equation to calculate the amount of money Greta will have after any number of weeks = ?
Money after 'x' number of weeks = 
⇒ Money after 'x' number of weeks = 
Part C
Money Greta will have after 1 year= ?
In a year there are 52 weeks
So, putting x = 52 in the solution of Part B
⇒ Money after 52 weeks = 
⇒ Money after 52 weeks = 
⇒ Money after 52 weeks = 2,700