Translate into math language:
7 - 3x = 23→ -3x = 23-7 → - 3x = 16 and x = - 16/3
C I believe
Open dot= >
Arrow is pointing > so
Only A is a function because it is the only one with just one input for every output. Function B has 4 in the x position twice.
Answer:
formula to find area = (1/2) b h
= (1/2) x Base x Height
substitute the values
= (1/2) x 18 x 12
= 108 cm2
Step-by-step explanation:
Answer:
Company A: 
Company B: 
Step-by-step explanation:
The initial fee is the y-intercept, as that is the cost at x = 0, or the cost before any time has passed. Afterwards, the rate the cost increases is the slope.
Linear equation in slope-intercept form:

where m is the slope and b is the y-intercept.
Company A charges $50 up front and $40 per hour afterwards, so the equation would be:

Company B charges $25 up front and $50 per hour, so:
