Suppose that carson earns $90,000 per year but must pay income taxes according to the tax schedule as shown below.
$0 to $7,000 10
$7,000 to $35,000 15
$35,000 to $75,000 25
$75,000 to $142,000 30
over $142,000 40

b. assume that carson has no tax exemptions or deductions. how much in income taxes must carson pay?
c. what is carson's marginal tax rate?
d. what is his average tax rate? .