it is 3 because if it has infinte solutions than it is = to 0 and 1 and infinite solutions
 
        
             
        
        
        
Paid same amount is important.
5 hours each one, and 4 babysitters
5*4 is 20
And if there's 170 dollars she paid in total, then each babysitter earned 170/20 per hour, which is 8.5 dollars per hour
        
             
        
        
        
Answer:
5.131 × 10¹⁴  Hz
Step-by-step explanation:
<u>Planck relation</u>

where:
- E = Energy of the photon (J).
- h = Planck's constant (J · s).
- f = frequency of light produced (Hz).
Given values:
- E = 3.4 × 10⁻¹⁹ J
- h = 6.626 × 10⁻³⁴ J · s
Substitute the given values into the formula and solve for f:






 
        
             
        
        
        
Answer:
$495
Step-by-step explanation:
Money earned for babysitting for 7 hours - $63
Money earned for babysitting for 1hour - 63/7= $9
Money earned for babysitting for 55 Hours = 
$9 × 55 
= $495
 
        
             
        
        
        
Wouldn't it be 1/18x?????